Removed internal ban handling and integrate with Misuzu.

SharpChat.sln

@@ -12,6 +12,7 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution
 		LICENSE = LICENSE
 		Protocol.md = Protocol.md
 		README.md = README.md
+		start.sh = start.sh
 	EndProjectSection
 EndProject
 Global

SharpChat/BanManager.cs

@@ -1,192 +0,0 @@
-using SharpChat.Flashii;
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Net;
-using System.Net.Http;
-using System.Threading.Tasks;
-
-namespace SharpChat {
-    public interface IBan {
-        DateTimeOffset Expires { get; }
-        string ToString();
-    }
-
-    public class BannedUser : IBan {
-        public long UserId { get; set; }
-        public DateTimeOffset Expires { get; set; }
-        public string Username { get; set; }
-
-        public BannedUser() {
-        }
-
-        public BannedUser(FlashiiBan fb) {
-            UserId = fb.UserId;
-            Expires = fb.Expires;
-            Username = fb.Username;
-        }
-
-        public override string ToString() {
-            return Username;
-        }
-    }
-
-    public class BannedIPAddress : IBan {
-        public IPAddress Address { get; set; }
-        public DateTimeOffset Expires { get; set; }
-
-        public BannedIPAddress() {
-        }
-
-        public BannedIPAddress(FlashiiBan fb) {
-            Address = IPAddress.Parse(fb.UserIP);
-            Expires = fb.Expires;
-        }
-
-        public override string ToString() {
-            return Address.ToString();
-        }
-    }
-
-    public class BanManager : IDisposable {
-        private readonly List<IBan> BanList = new();
-
-        private readonly HttpClient HttpClient;
-        public readonly ChatContext Context;
-
-
-        public bool IsDisposed { get; private set; }
-
-        public BanManager(HttpClient httpClient, ChatContext context) {
-            HttpClient = httpClient;
-            Context = context;
-            RefreshFlashiiBans().Wait();
-        }
-
-        public void Add(ChatUser user, DateTimeOffset expires) {
-            if(expires <= DateTimeOffset.Now)
-                return;
-
-            lock(BanList) {
-                BannedUser ban = BanList.OfType<BannedUser>().FirstOrDefault(x => x.UserId == user.UserId);
-
-                if(ban == null)
-                    Add(new BannedUser { UserId = user.UserId, Expires = expires, Username = user.Username });
-                else
-                    ban.Expires = expires;
-            }
-        }
-
-        public void Add(IPAddress addr, DateTimeOffset expires) {
-            if(expires <= DateTimeOffset.Now)
-                return;
-
-            lock(BanList) {
-                BannedIPAddress ban = BanList.OfType<BannedIPAddress>().FirstOrDefault(x => x.Address.Equals(addr));
-
-                if(ban == null)
-                    Add(new BannedIPAddress { Address = addr, Expires = expires });
-                else
-                    ban.Expires = expires;
-            }
-        }
-
-        private void Add(IBan ban) {
-            if(ban == null)
-                return;
-
-            lock(BanList)
-                if(!BanList.Contains(ban))
-                    BanList.Add(ban);
-        }
-
-        public void Remove(ChatUser user) {
-            lock(BanList)
-                BanList.RemoveAll(x => x is BannedUser ub && ub.UserId == user.UserId);
-        }
-
-        public void Remove(IPAddress addr) {
-            lock(BanList)
-                BanList.RemoveAll(x => x is BannedIPAddress ib && ib.Address.Equals(addr));
-        }
-
-        public void Remove(IBan ban) {
-            lock(BanList)
-                BanList.Remove(ban);
-        }
-
-        public DateTimeOffset Check(ChatUser user) {
-            if(user == null)
-                return DateTimeOffset.MinValue;
-
-            lock(BanList)
-                return BanList.OfType<BannedUser>().Where(x => x.UserId == user.UserId).FirstOrDefault()?.Expires ?? DateTimeOffset.MinValue;
-        }
-
-        public DateTimeOffset Check(IPAddress addr) {
-            if(addr == null)
-                return DateTimeOffset.MinValue;
-
-            lock(BanList)
-                return BanList.OfType<BannedIPAddress>().Where(x => x.Address.Equals(addr)).FirstOrDefault()?.Expires ?? DateTimeOffset.MinValue;
-        }
-
-        public BannedUser GetUser(string username) {
-            if(username == null)
-                return null;
-
-            if(!long.TryParse(username, out long userId))
-                userId = 0;
-
-            lock(BanList)
-                return BanList.OfType<BannedUser>().FirstOrDefault(x => x.Username.ToLowerInvariant() == username.ToLowerInvariant() || (userId > 0 && x.UserId == userId));
-        }
-
-        public BannedIPAddress GetIPAddress(IPAddress addr) {
-            lock(BanList)
-                return BanList.OfType<BannedIPAddress>().FirstOrDefault(x => x.Address.Equals(addr));
-        }
-
-        public void RemoveExpired() {
-            lock(BanList)
-                BanList.RemoveAll(x => x.Expires <= DateTimeOffset.Now);
-        }
-
-        public async Task RefreshFlashiiBans() {
-            IEnumerable<FlashiiBan> bans = await FlashiiBan.GetListAsync(HttpClient);
-
-            if(!bans.Any())
-                return;
-
-            lock(BanList)
-                foreach(FlashiiBan fb in bans) {
-                    if(!BanList.OfType<BannedUser>().Any(x => x.UserId == fb.UserId))
-                        Add(new BannedUser(fb));
-                    if(!BanList.OfType<BannedIPAddress>().Any(x => x.Address.ToString() == fb.UserIP))
-                        Add(new BannedIPAddress(fb));
-                }
-        }
-
-        public IEnumerable<IBan> All() {
-            lock(BanList)
-                return BanList.ToList();
-        }
-
-        ~BanManager() {
-            DoDispose();
-        }
-
-        public void Dispose() {
-            DoDispose();
-            GC.SuppressFinalize(this);
-        }
-
-        private void DoDispose() {
-            if(IsDisposed)
-                return;
-            IsDisposed = true;
-
-            BanList.Clear();
-        }
-    }
-}

SharpChat/ChatContext.cs

@@ -16,9 +16,6 @@ namespace SharpChat {
         public SockChatServer Server { get; }
         public Timer BumpTimer { get; }
 
-        public BanManager Bans { get; }
-        public readonly object BansAccess = new();
-
         public ChannelManager Channels { get; }
         public UserManager Users { get; }
         public ChatEventManager Events { get; }
@@ -28,7 +25,6 @@ namespace SharpChat {
         public ChatContext(HttpClient httpClient, SockChatServer server) {
             HttpClient = httpClient;
             Server = server;
-            Bans = new(httpClient, this);
             Users = new(this);
             Channels = new(this);
             Events = new(this);
@@ -37,26 +33,13 @@ namespace SharpChat {
         }
 
         public void Update() {
-            lock(BansAccess)
-                Bans.RemoveExpired();
             CheckPings();
         }
 
-        public void BanUser(ChatUser user, DateTimeOffset? until = null, bool banIPs = false, UserDisconnectReason reason = UserDisconnectReason.Kicked) {
+        public void BanUser(ChatUser user, TimeSpan duration, UserDisconnectReason reason = UserDisconnectReason.Kicked) {
-            if(until.HasValue && until.Value <= DateTimeOffset.UtcNow)
+            if(duration > TimeSpan.Zero)
-                until = null;
+                user.Send(new ForceDisconnectPacket(ForceDisconnectReason.Banned, DateTimeOffset.Now + duration));
-
+            else
-            if(until.HasValue) {
-                user.Send(new ForceDisconnectPacket(ForceDisconnectReason.Banned, until.Value));
-
-                lock(BansAccess) {
-                    Bans.Add(user, until.Value);
-
-                    if(banIPs)
-                        foreach(IPAddress ip in user.RemoteAddresses)
-                            Bans.Add(ip, until.Value);
-                }
-            } else
                 user.Send(new ForceDisconnectPacket(ForceDisconnectReason.Kicked));
 
             user.Close();
@@ -194,7 +177,6 @@ namespace SharpChat {
             Events?.Dispose();
             Channels?.Dispose();
             Users?.Dispose();
-            Bans?.Dispose();
         }
     }
 }

SharpChat/ChatUser.cs

@@ -120,12 +120,12 @@ namespace SharpChat {
         public ChatUser() {
         }
 
-        public ChatUser(FlashiiAuth auth) {
+        public ChatUser(FlashiiAuthInfo auth) {
             UserId = auth.UserId;
             ApplyAuth(auth, true);
         }
 
-        public void ApplyAuth(FlashiiAuth auth, bool invalidateRestrictions = false) {
+        public void ApplyAuth(FlashiiAuthInfo auth, bool invalidateRestrictions = false) {
             Username = auth.Username;
 
             if(Status == ChatUserStatus.Offline)

SharpChat/Flashii/FlashiiAuth.cs

@@ -1,85 +0,0 @@
-using System;
-using System.Net.Http;
-using System.Text.Json;
-using System.Text.Json.Serialization;
-using System.Threading.Tasks;
-
-namespace SharpChat.Flashii {
-    public class FlashiiAuthRequest {
-        [JsonPropertyName(@"user_id")]
-        public long UserId { get; set; }
-
-        [JsonPropertyName(@"token")]
-        public string Token { get; set; }
-
-        [JsonPropertyName(@"ip")]
-        public string IPAddress { get; set; }
-
-        [JsonIgnore]
-        public string Hash
-            => string.Join(@"#", UserId, Token, IPAddress).GetSignedHash();
-
-        public byte[] GetJSON() {
-            return JsonSerializer.SerializeToUtf8Bytes(this);
-        }
-    }
-
-    public class FlashiiAuth {
-        [JsonPropertyName(@"success")]
-        public bool Success { get; set; }
-
-        [JsonPropertyName(@"reason")]
-        public string Reason { get; set; } = @"none";
-
-        [JsonPropertyName(@"user_id")]
-        public long UserId { get; set; }
-
-        [JsonPropertyName(@"username")]
-        public string Username { get; set; }
-
-        [JsonPropertyName(@"colour_raw")]
-        public int ColourRaw { get; set; }
-
-        [JsonPropertyName(@"hierarchy")]
-        public int Rank { get; set; }
-
-        [JsonPropertyName(@"is_silenced")]
-        public DateTimeOffset SilencedUntil { get; set; }
-
-        [JsonPropertyName(@"perms")]
-        public ChatUserPermissions Permissions { get; set; }
-
-        public static async Task<FlashiiAuth> AttemptAsync(HttpClient httpClient, FlashiiAuthRequest authRequest) {
-            if(httpClient == null)
-                throw new ArgumentNullException(nameof(httpClient));
-            if(authRequest == null)
-                throw new ArgumentNullException(nameof(authRequest));
-
-#if DEBUG
-            if(authRequest.UserId >= 10000)
-                return new FlashiiAuth {
-                    Success = true,
-                    UserId = authRequest.UserId,
-                    Username = @"Misaka-" + (authRequest.UserId - 10000),
-                    ColourRaw = (RNG.Next(0, 255) << 16) | (RNG.Next(0, 255) << 8) | RNG.Next(0, 255),
-                    Rank = 0,
-                    SilencedUntil = DateTimeOffset.MinValue,
-                    Permissions = ChatUserPermissions.SendMessage | ChatUserPermissions.EditOwnMessage | ChatUserPermissions.DeleteOwnMessage,
-                };
-#endif
-
-            HttpRequestMessage request = new(HttpMethod.Post, FlashiiUrls.AuthURL) {
-                Content = new ByteArrayContent(authRequest.GetJSON()),
-                Headers = {
-                    { @"X-SharpChat-Signature", authRequest.Hash },
-                },
-            };
-
-            using HttpResponseMessage response = await httpClient.SendAsync(request);
-
-            return JsonSerializer.Deserialize<FlashiiAuth>(
-                await response.Content.ReadAsByteArrayAsync()
-            );
-        }
-    }
-}

SharpChat/Flashii/FlashiiAuthInfo.cs

@@ -0,0 +1,64 @@
+using System;
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+using System.Threading.Tasks;
+
+namespace SharpChat.Flashii {
+    public class FlashiiAuthInfo {
+        [JsonPropertyName(@"success")]
+        public bool Success { get; set; }
+
+        [JsonPropertyName(@"reason")]
+        public string Reason { get; set; } = @"none";
+
+        [JsonPropertyName(@"user_id")]
+        public long UserId { get; set; }
+
+        [JsonPropertyName(@"username")]
+        public string Username { get; set; }
+
+        [JsonPropertyName(@"colour_raw")]
+        public int ColourRaw { get; set; }
+
+        [JsonPropertyName(@"hierarchy")]
+        public int Rank { get; set; }
+
+        [JsonPropertyName(@"is_silenced")]
+        public DateTimeOffset SilencedUntil { get; set; }
+
+        [JsonPropertyName(@"perms")]
+        public ChatUserPermissions Permissions { get; set; }
+
+        private const string SIG_FMT = "verify#{0}#{1}#{2}";
+
+        public static async Task<FlashiiAuthInfo> VerifyAsync(HttpClient client, string method, string token, string ipAddr) {
+            if(client == null)
+                throw new ArgumentNullException(nameof(client));
+
+            method ??= string.Empty;
+            token ??= string.Empty;
+            ipAddr ??= string.Empty;
+
+            string sig = string.Format(SIG_FMT, method, token, ipAddr);
+
+            HttpRequestMessage req = new(HttpMethod.Post, FlashiiUrls.VerifyURL) {
+                Content = new FormUrlEncodedContent(new Dictionary<string, string> {
+                    { "method", method },
+                    { "token", token },
+                    { "ipaddr", ipAddr },
+                }),
+                Headers = {
+                    { @"X-SharpChat-Signature", sig.GetSignedHash() },
+                },
+            };
+
+            using HttpResponseMessage res = await client.SendAsync(req);
+
+            return JsonSerializer.Deserialize<FlashiiAuthInfo>(
+                await res.Content.ReadAsByteArrayAsync()
+            );
+        }
+    }
+}

SharpChat/Flashii/FlashiiBan.cs

@@ -1,39 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Net.Http;
-using System.Text.Json;
-using System.Text.Json.Serialization;
-using System.Threading.Tasks;
-
-namespace SharpChat.Flashii {
-    public class FlashiiBan {
-        private const string STRING = @"givemethebeans";
-
-        [JsonPropertyName(@"id")]
-        public int UserId { get; set; }
-
-        [JsonPropertyName(@"ip")]
-        public string UserIP { get; set; }
-
-        [JsonPropertyName(@"expires")]
-        public DateTimeOffset Expires { get; set; }
-
-        [JsonPropertyName(@"username")]
-        public string Username { get; set; }
-
-        public static async Task<IEnumerable<FlashiiBan>> GetListAsync(HttpClient httpClient) {
-            if(httpClient == null)
-                throw new ArgumentNullException(nameof(httpClient));
-
-            HttpRequestMessage request = new(HttpMethod.Get, FlashiiUrls.BansURL) {
-                Headers = {
-                    { @"X-SharpChat-Signature", STRING.GetSignedHash() },
-                },
-            };
-
-            using HttpResponseMessage response = await httpClient.SendAsync(request);
-
-            return JsonSerializer.Deserialize<IEnumerable<FlashiiBan>>(await response.Content.ReadAsByteArrayAsync());
-        }
-    }
-}

SharpChat/Flashii/FlashiiBanInfo.cs

@@ -0,0 +1,183 @@
+using System;
+using System.Collections.Generic;
+using System.Net;
+using System.Net.Http;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+using System.Threading.Tasks;
+
+namespace SharpChat.Flashii {
+    public class FlashiiBanInfo {
+        [JsonPropertyName("is_ban")]
+        public bool IsBanned { get; set; }
+
+        [JsonPropertyName("user_id")]
+        public string UserId { get; set; }
+
+        [JsonPropertyName("ip_addr")]
+        public string RemoteAddress { get; set; }
+
+        [JsonPropertyName("is_perma")]
+        public bool IsPermanent { get; set; }
+
+        [JsonPropertyName("expires")]
+        public DateTimeOffset ExpiresAt { get; set; }
+
+        // only populated in list request
+        [JsonPropertyName("user_name")]
+        public string UserName { get; set; }
+
+        [JsonPropertyName(@"user_colour")]
+        public int UserColourRaw { get; set; }
+
+        public bool HasExpired => !IsPermanent && DateTimeOffset.UtcNow >= ExpiresAt;
+
+        public ChatColour UserColour => ChatColour.FromMisuzu(UserColourRaw);
+
+        private const string CHECK_SIG_FMT = "check#{0}#{1}#{2}#{3}";
+        private const string REVOKE_SIG_FMT = "revoke#{0}#{1}#{2}";
+        private const string CREATE_SIG_FMT = "create#{0}#{1}#{2}#{3}#{4}#{5}#{6}#{7}";
+        private const string LIST_SIG_FMT = "list#{0}";
+
+        public static async Task<FlashiiBanInfo> CheckAsync(HttpClient client, string userId = null, string ipAddr = null, bool userIdIsName = false) {
+            if(client == null)
+                throw new ArgumentNullException(nameof(client));
+
+            userId ??= string.Empty;
+            ipAddr ??= string.Empty;
+
+            string userIdIsNameStr = userIdIsName ? "1" : "0";
+            string now = DateTimeOffset.Now.ToUnixTimeSeconds().ToString();
+            string url = string.Format(FlashiiUrls.BansCheckURL, Uri.EscapeDataString(userId), Uri.EscapeDataString(ipAddr), Uri.EscapeDataString(now), Uri.EscapeDataString(userIdIsNameStr));
+            string sig = string.Format(CHECK_SIG_FMT, now, userId, ipAddr, userIdIsNameStr);
+
+            HttpRequestMessage req = new(HttpMethod.Get, url) {
+                Headers = {
+                    { "X-SharpChat-Signature", sig.GetSignedHash() },
+                },
+            };
+
+            using HttpResponseMessage res = await client.SendAsync(req);
+
+            return JsonSerializer.Deserialize<FlashiiBanInfo>(
+                await res.Content.ReadAsByteArrayAsync()
+            );
+        }
+
+        public static async Task<FlashiiBanInfo[]> GetListAsync(HttpClient client) {
+            if(client == null)
+                throw new ArgumentNullException(nameof(client));
+
+            string now = DateTimeOffset.Now.ToUnixTimeSeconds().ToString();
+            string url = string.Format(FlashiiUrls.BansListURL, Uri.EscapeDataString(now));
+            string sig = string.Format(LIST_SIG_FMT, now);
+
+            HttpRequestMessage req = new(HttpMethod.Get, url) {
+                Headers = {
+                    { "X-SharpChat-Signature", sig.GetSignedHash() },
+                },
+            };
+
+            using HttpResponseMessage res = await client.SendAsync(req);
+
+            return JsonSerializer.Deserialize<FlashiiBanInfo[]>(
+                await res.Content.ReadAsByteArrayAsync()
+            );
+        }
+
+        public enum RevokeKind {
+            UserId,
+            RemoteAddress,
+        }
+
+        public async Task<bool> RevokeAsync(HttpClient client, RevokeKind kind) {
+            if(client == null)
+                throw new ArgumentNullException(nameof(client));
+
+            string type = kind switch {
+                RevokeKind.UserId => "user",
+                RevokeKind.RemoteAddress => "addr",
+                _ => throw new ArgumentException("Invalid kind specified.", nameof(kind)),
+            };
+
+            string target = kind switch {
+                RevokeKind.UserId => UserId,
+                RevokeKind.RemoteAddress => RemoteAddress,
+                _ => string.Empty,
+            };
+
+            string now = DateTimeOffset.Now.ToUnixTimeSeconds().ToString();
+            string url = string.Format(FlashiiUrls.BansRevokeURL, Uri.EscapeDataString(type), Uri.EscapeDataString(target), Uri.EscapeDataString(now));
+            string sig = string.Format(REVOKE_SIG_FMT, now, type, target);
+
+            HttpRequestMessage req = new(HttpMethod.Delete, url) {
+                Headers = {
+                    { "X-SharpChat-Signature", sig.GetSignedHash() },
+                },
+            };
+
+            using HttpResponseMessage res = await client.SendAsync(req);
+
+            if(res.StatusCode == HttpStatusCode.NotFound)
+                return false;
+
+            res.EnsureSuccessStatusCode();
+
+            return res.StatusCode == HttpStatusCode.NoContent;
+        }
+
+        public static async Task CreateAsync(
+            HttpClient client,
+            string targetId,
+            string targetAddr,
+            string modId,
+            string modAddr,
+            TimeSpan duration,
+            string reason
+        ) {
+            if(client == null)
+                throw new ArgumentNullException(nameof(client));
+            if(string.IsNullOrWhiteSpace(targetAddr))
+                throw new ArgumentNullException(nameof(targetAddr));
+            if(string.IsNullOrWhiteSpace(modAddr))
+                throw new ArgumentNullException(nameof(modAddr));
+            if(duration <= TimeSpan.Zero)
+                return;
+
+            modId ??= string.Empty;
+            targetId ??= string.Empty;
+            reason ??= string.Empty;
+
+            string isPerma = duration == TimeSpan.MaxValue ? "1" : "0";
+            string durationStr = duration == TimeSpan.MaxValue ? "-1" : duration.TotalSeconds.ToString();
+
+            string now = DateTimeOffset.Now.ToUnixTimeSeconds().ToString();
+            string sig = string.Format(
+                CREATE_SIG_FMT,
+                now, targetId, targetAddr,
+                modId, modAddr,
+                durationStr, isPerma, reason
+            );
+
+            HttpRequestMessage req = new(HttpMethod.Post, FlashiiUrls.BansCreateURL) {
+                Headers = {
+                    { "X-SharpChat-Signature", sig.GetSignedHash() },
+                },
+                Content = new FormUrlEncodedContent(new Dictionary<string, string> {
+                    { "t", now },
+                    { "ui", targetId },
+                    { "ua", targetAddr },
+                    { "mi", modId },
+                    { "ma", modAddr },
+                    { "d", durationStr },
+                    { "p", isPerma },
+                    { "r", reason },
+                }),
+            };
+
+            using HttpResponseMessage res = await client.SendAsync(req);
+
+            res.EnsureSuccessStatusCode();
+        }
+    }
+}

SharpChat/Flashii/FlashiiUrls.cs

@@ -2,21 +2,32 @@
 
 namespace SharpChat.Flashii {
     public static class FlashiiUrls {
-        private const string BASE_URL_FILE = @"msz_url.txt";
+        private const string BASE_URL_FILE = "msz_url.txt";
-        private const string BASE_URL_FALLBACK = @"https://flashii.net";
+        private const string BASE_URL_FALLBACK = "https://flashii.net";
 
-        private const string AUTH = @"/_sockchat/verify";
+        private const string VERIFY = "/_sockchat/verify";
-        private const string BANS = @"/_sockchat/bans";
+        private const string BUMP = "/_sockchat/bump";
-        private const string BUMP = @"/_sockchat/bump";
+
+        private const string BANS_CHECK = "/_sockchat/bans/check?u={0}&a={1}&x={2}&n={3}";
+        private const string BANS_CREATE = "/_sockchat/bans/create";
+        private const string BANS_REVOKE = "/_sockchat/bans/revoke?t={0}&s={1}&x={2}";
+        private const string BANS_LIST = "/_sockchat/bans/list?x={0}";
 
-        public static string AuthURL { get; }
-        public static string BansURL { get; }
         public static string BumpURL { get; }
+        public static string VerifyURL { get; }
+
+        public static string BansCheckURL { get; }
+        public static string BansCreateURL { get; }
+        public static string BansRevokeURL { get; }
+        public static string BansListURL { get; }
 
         static FlashiiUrls() {
-            AuthURL = GetURL(AUTH);
-            BansURL = GetURL(BANS);
             BumpURL = GetURL(BUMP);
+            VerifyURL = GetURL(VERIFY);
+            BansCheckURL = GetURL(BANS_CHECK);
+            BansCreateURL = GetURL(BANS_CREATE);
+            BansRevokeURL = GetURL(BANS_REVOKE);
+            BansListURL = GetURL(BANS_LIST);
         }
 
         public static string GetBaseURL() {

SharpChat/Packet/AuthFailPacket.cs

@@ -1,4 +1,5 @@
-using System;
+using SharpChat.Flashii;
+using System;
 using System.Collections.Generic;
 using System.Text;
 
@@ -11,16 +12,13 @@ namespace SharpChat.Packet {
 
     public class AuthFailPacket : ServerPacket {
         public AuthFailReason Reason { get; private set; }
-        public DateTimeOffset Expires { get; private set; }
+        public FlashiiBanInfo BanInfo { get; private set; }
 
-        public AuthFailPacket(AuthFailReason reason, DateTimeOffset? expires = null) {
+        public AuthFailPacket(AuthFailReason reason, FlashiiBanInfo fbi = null) {
             Reason = reason;
 
-            if(reason == AuthFailReason.Banned) {
+            if(reason == AuthFailReason.Banned)
-                if(!expires.HasValue)
+                BanInfo = fbi ?? throw new ArgumentNullException(nameof(fbi));
-                    throw new ArgumentNullException(nameof(expires));
-                Expires = expires.Value;
-            }
         }
 
         public override IEnumerable<string> Pack() {
@@ -45,10 +43,10 @@ namespace SharpChat.Packet {
             if(Reason == AuthFailReason.Banned) {
                 sb.Append('\t');
 
-                if(Expires == DateTimeOffset.MaxValue)
+                if(BanInfo.IsPermanent)
-                    sb.Append(@"-1");
+                    sb.Append("-1");
                 else
-                    sb.Append(Expires.ToUnixTimeSeconds());
+                    sb.Append(BanInfo.ExpiresAt.ToUnixTimeSeconds());
             }
 
             yield return sb.ToString();

SharpChat/Packet/BanListPacket.cs

@@ -1,13 +1,14 @@
-using System;
+using SharpChat.Flashii;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
 
 namespace SharpChat.Packet {
     public class BanListPacket : ServerPacket {
-        public IEnumerable<IBan> Bans { get; private set; }
+        public IEnumerable<FlashiiBanInfo> Bans { get; private set; }
 
-        public BanListPacket(IEnumerable<IBan> bans) {
+        public BanListPacket(IEnumerable<FlashiiBanInfo> bans) {
             Bans = bans ?? throw new ArgumentNullException(nameof(bans));
         }
 
@@ -19,8 +20,10 @@ namespace SharpChat.Packet {
             sb.Append(DateTimeOffset.Now.ToUnixTimeSeconds());
             sb.Append("\t-1\t0\fbanlist\f");
 
-            foreach(IBan ban in Bans)
+            foreach(FlashiiBanInfo ban in Bans) {
-                sb.AppendFormat(@"<a href=""javascript:void(0);"" onclick=""Chat.SendMessageWrapper('/unban '+ this.innerHTML);"">{0}</a>, ", ban);
+                string banStr = string.IsNullOrEmpty(ban.UserName) ? ban.RemoteAddress : ban.UserName;
+                sb.AppendFormat(@"<a href=""javascript:void(0);"" onclick=""Chat.SendMessageWrapper('/unban '+ this.innerHTML);"">{0}</a>, ", banStr);
+            }
 
             if(Bans.Any())
                 sb.Length -= 2;

SharpChat/Packet/ForceDisconnectPacket.cs

@@ -31,7 +31,10 @@ namespace SharpChat.Packet {
 
             if(Reason == ForceDisconnectReason.Banned) {
                 sb.Append('\t');
-                sb.Append(Expires.ToUnixTimeSeconds());
+                if(Expires.Year >= 2100)
+                    sb.Append("-1");
+                else
+                    sb.Append(Expires.ToUnixTimeSeconds());
             }
 
             yield return sb.ToString();

SharpChat/SockChatServer.cs

@@ -11,6 +11,7 @@ using System.Net;
 using System.Net.Http;
 using System.Text;
 using System.Threading;
+using System.Threading.Tasks;
 
 namespace SharpChat {
     public class SockChatServer : IDisposable {
@@ -19,11 +20,9 @@ namespace SharpChat {
 #if DEBUG
         public const int MAX_CONNECTIONS = 9001;
         public const int FLOOD_KICK_LENGTH = 5;
-        public const bool ENABLE_TYPING_EVENT = true;
 #else
         public const int MAX_CONNECTIONS = 5;
         public const int FLOOD_KICK_LENGTH = 30;
-        public const bool ENABLE_TYPING_EVENT = false;
 #endif
 
         public bool IsDisposed { get; private set; }
@@ -144,14 +143,25 @@ namespace SharpChat {
                 sess.User.RateLimiter.AddTimePoint();
 
                 if(sess.User.RateLimiter.State == ChatRateLimitState.Kick) {
-                    Context.BanUser(sess.User, DateTimeOffset.UtcNow.AddSeconds(FLOOD_KICK_LENGTH), false, UserDisconnectReason.Flood);
+                    Task.Run(async () => {
+                        TimeSpan duration = TimeSpan.FromSeconds(FLOOD_KICK_LENGTH);
+
+                        await FlashiiBanInfo.CreateAsync(
+                            HttpClient,
+                            sess.User.UserId.ToString(), sess.RemoteAddress.ToString(),
+                            string.Empty, "::1",
+                            duration,
+                            "Kicked from chat for flood protection."
+                        );
+
+                        Context.BanUser(sess.User, duration, UserDisconnectReason.Flood);
+                    }).Wait();
                     return;
                 } else if(sess.User.RateLimiter.State == ChatRateLimitState.Warning)
-                    sess.User.Send(new FloodWarningPacket()); // make it so this thing only sends once
+                    sess.User.Send(new FloodWarningPacket());
             }
 
             string[] args = msg.Split('\t');
-
             if(args.Length < 1)
                 return;
 
@@ -168,58 +178,80 @@ namespace SharpChat {
                     if(sess.User != null)
                         break;
 
-                    DateTimeOffset aBanned;
+                    string authMethod = args.ElementAtOrDefault(1);
-                    lock(Context.BansAccess)
+                    if(string.IsNullOrWhiteSpace(authMethod)) {
-                        aBanned = Context.Bans.Check(sess.RemoteAddress);
+                        sess.Send(new AuthFailPacket(AuthFailReason.AuthInvalid));
-
-                    if(aBanned > DateTimeOffset.UtcNow) {
-                        sess.Send(new AuthFailPacket(AuthFailReason.Banned, aBanned));
                         sess.Dispose();
                         break;
                     }
 
-                    if(args.Length < 3 || !long.TryParse(args[1], out long aUserId))
+                    string authToken = args.ElementAtOrDefault(2);
+                    if(string.IsNullOrWhiteSpace(authToken)) {
+                        sess.Send(new AuthFailPacket(AuthFailReason.AuthInvalid));
+                        sess.Dispose();
                         break;
+                    }
 
-                    FlashiiAuth.AttemptAsync(HttpClient, new FlashiiAuthRequest {
+                    if(authMethod.All(c => c is >= '0' and <= '9') && authToken.Contains(':')) {
-                        UserId = aUserId,
+                        string[] tokenParts = authToken.Split(':', 2);
-                        Token = args[2],
+                        authMethod = tokenParts[0];
-                        IPAddress = sess.RemoteAddress.ToString(),
+                        authToken = tokenParts[1];
-                    }).ContinueWith(authTask => {
+                    }
-                        if(authTask.IsFaulted) {
+
-                            Logger.Write($@"<{sess.Id}> Auth task fail: {authTask.Exception}");
+                    Task.Run(async () => {
+                        FlashiiAuthInfo fai;
+                        string ipAddr = sess.RemoteAddress.ToString();
+
+                        try {
+                            fai = await FlashiiAuthInfo.VerifyAsync(HttpClient, authMethod, authToken, ipAddr);
+                        } catch(Exception ex) {
+                            Logger.Write($@"<{sess.Id}> Failed to authenticate: {ex}");
+                            sess.Send(new AuthFailPacket(AuthFailReason.AuthInvalid));
+                            sess.Dispose();
+#if DEBUG
+                            throw;
+#else
+                            return;
+#endif
+                        }
+
+                        if(!fai.Success) {
+                            Logger.Debug($@"<{sess.Id}> Auth fail: {fai.Reason}");
                             sess.Send(new AuthFailPacket(AuthFailReason.AuthInvalid));
                             sess.Dispose();
                             return;
                         }
 
-                        FlashiiAuth auth = authTask.Result;
+                        FlashiiBanInfo fbi;
-
+                        try {
-                        if(!auth.Success) {
+                            fbi = await FlashiiBanInfo.CheckAsync(HttpClient, fai.UserId.ToString(), ipAddr);
-                            Logger.Debug($@"<{sess.Id}> Auth fail: {auth.Reason}");
+                        } catch(Exception ex) {
+                            Logger.Write($@"<{sess.Id}> Failed auth ban check: {ex}");
                             sess.Send(new AuthFailPacket(AuthFailReason.AuthInvalid));
                             sess.Dispose();
+#if DEBUG
+                            throw;
+#else
+                            return;
+#endif
+                        }
+
+                        if(fbi.IsBanned && !fbi.HasExpired) {
+                            Logger.Write($@"<{sess.Id}> User is banned.");
+                            sess.Send(new AuthFailPacket(AuthFailReason.Banned, fbi));
+                            sess.Dispose();
                             return;
                         }
 
-                        ChatUser aUser = Context.Users.Get(auth.UserId);
+                        ChatUser aUser = Context.Users.Get(fai.UserId);
 
                         if(aUser == null)
-                            aUser = new ChatUser(auth);
+                            aUser = new ChatUser(fai);
                         else {
-                            aUser.ApplyAuth(auth);
+                            aUser.ApplyAuth(fai);
                             aUser.Channel?.Send(new UserUpdatePacket(aUser));
                         }
 
-                        lock(Context.BansAccess)
-                            aBanned = Context.Bans.Check(aUser);
-
-                        if(aBanned > DateTimeOffset.Now) {
-                            sess.Send(new AuthFailPacket(AuthFailReason.Banned, aBanned));
-                            sess.Dispose();
-                            return;
-                        }
-
                         // Enforce a maximum amount of connections per user
                         if(aUser.SessionCount >= MAX_CONNECTIONS) {
                             sess.Send(new AuthFailPacket(AuthFailReason.MaxSessions));
@@ -243,7 +275,7 @@ namespace SharpChat {
                         }
 
                         Context.HandleJoin(aUser, Context.Channels.DefaultChannel, sess);
-                    });
+                    }).Wait();
                     break;
 
                 case "2":
@@ -287,7 +319,7 @@ namespace SharpChat {
                     IChatMessage message = null;
 
                     if(messageText[0] == '/') {
-                        message = HandleV1Command(messageText, mUser, mChannel);
+                        message = HandleV1Command(messageText, mUser, mChannel, sess);
 
                         if(message == null)
                             break;
@@ -307,7 +339,7 @@ namespace SharpChat {
             }
         }
 
-        public IChatMessage HandleV1Command(string message, ChatUser user, ChatChannel channel) {
+        public IChatMessage HandleV1Command(string message, ChatUser user, ChatChannel channel, ChatUserSession sess) {
             string[] parts = message[1..].Split(' ');
             string commandName = parts[0].Replace(@".", string.Empty).ToLowerInvariant();
 
@@ -640,10 +672,13 @@ namespace SharpChat {
                         break;
                     }
 
-                    ChatUser banUser;
+                    string banUserTarget = parts.ElementAtOrDefault(1);
+                    string banDurationStr = parts.ElementAtOrDefault(2);
+                    int banReasonIndex = 2;
+                    ChatUser banUser = null;
 
-                    if(parts.Length < 2 || (banUser = Context.Users.Get(parts[1])) == null) {
+                    if(banUserTarget == null || (banUser = Context.Users.Get(banUserTarget)) == null) {
-                        user.Send(new LegacyCommandResponse(LCR.USER_NOT_FOUND, true, parts.Length < 2 ? @"User" : parts[1]));
+                        user.Send(new LegacyCommandResponse(LCR.USER_NOT_FOUND, true, banUser == null ? @"User" : banUserTarget));
                         break;
                     }
 
@@ -652,24 +687,44 @@ namespace SharpChat {
                         break;
                     }
 
-                    lock(Context.BansAccess)
+                    TimeSpan duration = isBanning ? TimeSpan.MaxValue : TimeSpan.Zero;
-                        if(Context.Bans.Check(banUser) > DateTimeOffset.Now) {
+                    if(!string.IsNullOrWhiteSpace(banDurationStr) && double.TryParse(banDurationStr, out double durationSeconds)) {
-                            user.Send(new LegacyCommandResponse(LCR.KICK_NOT_ALLOWED, true, banUser.DisplayName));
+                        if(durationSeconds < 0) {
-                            break;
-                        }
-
-                    DateTimeOffset? banUntil = isBanning ? (DateTimeOffset?)DateTimeOffset.MaxValue : null;
-
-                    if(parts.Length > 2) {
-                        if(!double.TryParse(parts[2], out double silenceSeconds)) {
                             user.Send(new LegacyCommandResponse(LCR.COMMAND_FORMAT_ERROR));
                             break;
                         }
 
-                        banUntil = DateTimeOffset.UtcNow.AddSeconds(silenceSeconds);
+                        duration = TimeSpan.FromSeconds(durationSeconds);
+                        ++banReasonIndex;
                     }
 
-                    Context.BanUser(banUser, banUntil, isBanning);
+                    if(duration <= TimeSpan.Zero) {
+                        Context.BanUser(banUser, duration);
+                        break;
+                    }
+
+                    string banReason = string.Join(' ', parts.Skip(banReasonIndex));
+
+                    Task.Run(async () => {
+                        // obviously it makes no sense to only check for one ip address but that's current misuzu limitations
+                        FlashiiBanInfo fbi = await FlashiiBanInfo.CheckAsync(
+                            HttpClient, banUser.UserId.ToString(), banUser.RemoteAddresses.First().ToString()
+                        );
+
+                        if(fbi.IsBanned && !fbi.HasExpired) {
+                            user.Send(new LegacyCommandResponse(LCR.KICK_NOT_ALLOWED, true, banUser.DisplayName));
+                            return;
+                        }
+
+                        await FlashiiBanInfo.CreateAsync(
+                            HttpClient,
+                            banUser.UserId.ToString(), banUser.RemoteAddresses.First().ToString(),
+                            user.UserId.ToString(), sess.RemoteAddress.ToString(),
+                            duration, banReason
+                        );
+
+                        Context.BanUser(banUser, duration);
+                    }).Wait();
                     break;
                 case @"pardon":
                 case @"unban":
@@ -678,24 +733,36 @@ namespace SharpChat {
                         break;
                     }
 
-                    if(parts.Length < 2) {
+                    bool unbanUserTargetIsName = true;
-                        user.Send(new LegacyCommandResponse(LCR.USER_NOT_BANNED, true, string.Empty));
+                    string unbanUserTarget = parts.ElementAtOrDefault(1);
+                    if(string.IsNullOrWhiteSpace(unbanUserTarget)) {
+                        user.Send(new LegacyCommandResponse(LCR.COMMAND_FORMAT_ERROR));
                         break;
                     }
 
-                    BannedUser unbanUser;
+                    ChatUser unbanUser = Context.Users.Get(unbanUserTarget);
-                    lock(Context.BansAccess)
+                    if(unbanUser == null && long.TryParse(unbanUserTarget, out long unbanUserId)) {
-                        unbanUser = Context.Bans.GetUser(parts[1]);
+                        unbanUserTargetIsName = false;
-
+                        unbanUser = Context.Users.Get(unbanUserId);
-                    if(unbanUser == null || unbanUser.Expires <= DateTimeOffset.Now) {
-                        user.Send(new LegacyCommandResponse(LCR.USER_NOT_BANNED, true, unbanUser?.Username ?? parts[1]));
-                        break;
                     }
 
-                    lock(Context.BansAccess)
+                    if(unbanUser != null)
-                        Context.Bans.Remove(unbanUser);
+                        unbanUserTarget = unbanUser.UserId.ToString();
 
-                    user.Send(new LegacyCommandResponse(LCR.USER_UNBANNED, false, unbanUser));
+                    Task.Run(async () => {
+                        FlashiiBanInfo banInfo = await FlashiiBanInfo.CheckAsync(HttpClient, unbanUserTarget, userIdIsName: unbanUserTargetIsName);
+
+                        if(!banInfo.IsBanned || banInfo.HasExpired) {
+                            user.Send(new LegacyCommandResponse(LCR.USER_NOT_BANNED, true, unbanUserTarget));
+                            return;
+                        }
+
+                        bool wasBanned = await banInfo.RevokeAsync(HttpClient, FlashiiBanInfo.RevokeKind.UserId);
+                        if(wasBanned)
+                            user.Send(new LegacyCommandResponse(LCR.USER_UNBANNED, false, unbanUserTarget));
+                        else
+                            user.Send(new LegacyCommandResponse(LCR.USER_NOT_BANNED, true, unbanUserTarget));
+                    }).Wait();
                     break;
                 case @"pardonip":
                 case @"unbanip":
@@ -704,21 +771,28 @@ namespace SharpChat {
                         break;
                     }
 
-                    if(parts.Length < 2 || !IPAddress.TryParse(parts[1], out IPAddress unbanIP)) {
+                    string unbanAddrTarget = parts.ElementAtOrDefault(1);
-                        user.Send(new LegacyCommandResponse(LCR.USER_NOT_BANNED, true, string.Empty));
+                    if(string.IsNullOrWhiteSpace(unbanAddrTarget) || !IPAddress.TryParse(unbanAddrTarget, out IPAddress unbanAddr)) {
+                        user.Send(new LegacyCommandResponse(LCR.COMMAND_FORMAT_ERROR));
                         break;
                     }
 
-                    lock(Context.BansAccess) {
+                    unbanAddrTarget = unbanAddr.ToString();
-                        if(Context.Bans.Check(unbanIP) <= DateTimeOffset.Now) {
+
-                            user.Send(new LegacyCommandResponse(LCR.USER_NOT_BANNED, true, unbanIP));
+                    Task.Run(async () => {
-                            break;
+                        FlashiiBanInfo banInfo = await FlashiiBanInfo.CheckAsync(HttpClient, ipAddr: unbanAddrTarget);
+
+                        if(!banInfo.IsBanned || banInfo.HasExpired) {
+                            user.Send(new LegacyCommandResponse(LCR.USER_NOT_BANNED, true, unbanAddrTarget));
+                            return;
                         }
 
-                        Context.Bans.Remove(unbanIP);
+                        bool wasBanned = await banInfo.RevokeAsync(HttpClient, FlashiiBanInfo.RevokeKind.RemoteAddress);
-                    }
+                        if(wasBanned)
-
+                            user.Send(new LegacyCommandResponse(LCR.USER_UNBANNED, false, unbanAddrTarget));
-                    user.Send(new LegacyCommandResponse(LCR.USER_UNBANNED, false, unbanIP));
+                        else
+                            user.Send(new LegacyCommandResponse(LCR.USER_NOT_BANNED, true, unbanAddrTarget));
+                    }).Wait();
                     break;
                 case @"bans": // gets a list of bans
                 case @"banned":
@@ -727,8 +801,11 @@ namespace SharpChat {
                         break;
                     }
 
-                    lock(Context.BansAccess)
+                    Task.Run(async () => {
-                        user.Send(new BanListPacket(Context.Bans.All()));
+                        user.Send(new BanListPacket(
+                            await FlashiiBanInfo.GetListAsync(HttpClient)
+                        ));
+                    }).Wait();
                     break;
                 case @"silence": // silence a user
                     if(!user.Can(ChatUserPermissions.SilenceUser)) {

start.sh

@@ -0,0 +1,6 @@
+#!/bin/sh
+
+export DOTNET_CLI_TELEMETRY_OPTOUT=1
+export LANG=en_US.UTF-8
+
+dotnet run --project SharpChat -c Release